Dr Abbas Khan was a surgeon from London who died while being help captive in Syria Credit: Family handout

The 32-year-old orthopaedic surgeon from London was captured in November last year in the ancient city of Aleppo after travelling from Turkey to help victims of hospital bombings. His death was announced on December 17.

At a packed funeral prayer service at Regent's Park mosque in London, his brother Shahnawaz Khan said:

Last night I sat down to undertake the morbid task of writing a eulogy for my brother. My brother, to us, was our star. His star shone on our family.

Dr Khan was described by his brother as the "kindest and simplest man I've ever met.